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' @non faire @met @fitte MOSES W.' KIDDER, OF LOWELL, MASSACHUSETTS, AiSSlGNOR""lO HlMSELF AND H. R. BAltliilllR;l OF SAME PLACE. I

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TO ALL WHOMIT- ll-AYVGONGERN:

Be it knownthat I, MOSES W. KIDDER, of Lowell, in the county of Middlesex, und State el" Massachusetts, halve invented a. new and us'cfui Improvement in Fire Regulators, which are the nppnrotus or device connected with or arranged near steam boilers or other furnaces, und aetuntedby steam or other expensive gos, vsopor, or y fluid, to-open and close the domper or dempers automatically, und admit o greater or a. less quantity of atmospheric nir to the lire; `und hereby declare the following to be a. full, clear, and enact description of the seine, reference being had tothe nceeinpzinying drawings, making a. port of this specification, in which-- Figure 1 is a. central longitudinal'section.

Figure 2, o side elevation'.

Figure 3, o. transverse section.

Figure 4, n top j and Figure 5, c bottom end view.

This invention consists in the employment of a series of concave-convex disks'or wnshers, A, plain or cor rugalted, und arranged upon o central rod, B, and enclosed within a. cylinder, C, which hosen induction pipe D, entering at one end,- and extending outward 'and through a. hub E, connected with ends F ofthe curved portions of two parallel rods G, the opposite ends H of which terminate in and near the extremities of :i cross-heed, J, n 'shortdistnnee from the end K of the cylinder. The central and outer edgesofthe disl-:s A ure soldered together. One disk, A1, nen-rest thejliead K of the cylinder, is soldered or otherwise fastened at X to the said cylinder head, and the disk A, at the opposite extremity of the series'ot disks, is also fastened or soldered at V to the rod B, thus forming n sort of mctallicbellows. The rod B is loose in vthe head K of the cylinder, the

' space around said rod admitting ingress Lind egress ol` air'witlin and around the concevities of the disks, and

the enclosed portion B'Vof the rod. i A spira-l spring, L, surrounds the pipe D between the movable hub E :ind the head M of the cylinder. This spring acting against the hub E, connected with the rods G, the cross-heed d, and the cndp of the control rod B, serves to distend the series of" disks und hold them in the desired position to be acted upon. by steam or its equivalent admitted through thepipe D.

To putin operation` my improved fire regulator the cylinder is secured-to some suitable support :it any convenient distance from the boiler, or to the same, and thel lever or other connection for opening und closing thedreught domper attached to the cross-heed J, to 'either or both of the rods G, the 'hnb'E, or the hook R, and the steam admitted through the pipe D to the interior of the cylinderoround the convex surf-acres oi" the disks.` When the damper is open, and the fire beneath the boiler burns freely, steam is generated rupi/ally, und the pressure momentarily increases. This inercosedpressure acts instantly upon the disks within the cylinder, consequently upon the cross-head, the rods and domper connections, and closes the domper which cheeks 'the draught, thereby'reducing the fire and stopping the rapid generating of steers. When the steam in the boiler is lonr o r decreasing, the action of thc-steam on the disks is limited, and the damper will he proportioonbly opened, the draught inereased,the tire rekindled, to generate steam more rapidly. By this operation et the regulator, demper, draught, und lire, the steam in the boiler is kept at or near a. uniform pressure, which produces a, uniform action of theregulator and domper connections,` the pressure of steam acting upon the regu-- lutor, und the regulator controlling theprcssure of steam, through the damper. und connections, and tlic'iire beneath the boiler. l

The number of disks employed in thecylinder must'bc in proportion to the' amount of inotion required to open the damper; and when a. very limited motion will answer the purpose, soy one-fourth of an inch, a, single concave-convex disk will be sulicient, as shown in red lines in lig. 1. But to insure easy action', and allen' for considerable motion, say two to six inches, I employ from ten to fifty or more disks, and then I obtain all the motion desired. A pointer, S, on one of the rods G 'points to indicsttingerks 0,2, 4, 6, or indicator, shown in tic. 2, by which muy bc'lcnown the pressure of steam in the boiler, thus serving es o regulator or steam gauge, or pressure gouge, for indicating the pressure of steam n boilers.

What lol-nim :1s-new, and desire to secure by' Letters Potent, is- Tlio employment of one or more metallic disks or plates, corrugotednor plein, in the .manner and for the purpose specified.

Wi tncsscs Jeux E. CRANE, J. S. WHITNEY.

Moses W. Klonen. 

